| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a very [adj] period [prep] | 26 |
|
| 2 | [prep] a very [adj] period [prep] | 26 |
|
| 3 | [prep] a very [adj] period of | 20 |
|
| 4 | [prep] a very short period [prep] | 14 |
|
| 5 | [prep] a very short period [prep] | 14 |
|
| 6 | for a very [adj] period [prep] | 7 |
|
| 7 | in a very [adj] period [prep] | 7 |
|
| 8 | for a very [adj] period [prep] | 7 |
|
| 9 | in a very [adj] period [prep] | 7 |
|
